Answer:
The side lengths cannot belong to a right triangle.
Step-by-step explanation:
This is a simple case of Pythagorean proof. If this triangle was a right triangle, 20^2 + 21^2 = 28^2. However, this is not the case. 20^2 + 21^2 = 841, which square root is 29.
If you forgot, the Pythagoren Theorem is: a^2 + b^2 = c^2.
Hope this helps!
I don’t know really really I don’t know
Answer:
Step-by-step explanation:
I think this is your full question, right?
<em>Cindy and Zoey work at a store. Both girls earn $6.25 per hour. During a normal week Cindy works 15 hours and Zoey works 20 hours. The expression 6.25(15) + 6.25(20) can be used to calculate the total amount of money that the girls earned in one week. Which expression shows another way to calculate the amount of money the girls earn in one week? </em>
My answer:
The expression shows another way must be equal to: <em>6.25(15) + 6.25(20) </em>
<=> 6.25 (15+20)
Because both girls earn the same per hour.
If there are 25 students and she wants either 3,4,5 equal teams you simply take and divide 25 by the numbers and determine if they are equal teams or not. So dividing 25 by 3 and getting 8.3 repeating isn't an equal team which means she cant have only 3 teams. Or you can divide 25 by 4 which will give you 5 students to a group which is an equal team set through out the room, also you can divide 25 by 5 which gives you 4 students to a group which also is an equal team set through out the room. Therefore the numbers of groups she can have are 4 and 5 but 3 is out of the question because it is a decimal also another thing about it is that it's an irrational number.
